Water heater, purifier, and separator.



No. 66|,934. Patented Nov.v |3, |900.

' A. G. HOHENSTEIN.

WATER HEATER, PUHIFIER, AND SEPARATUR.

(Application med July 3o, 1900.1

(No Modal.) 2 Sheets-Sheet l.

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WITNESSES:

No. 66l,934. Patented N0v..|3, |900.

A. G. HUHENSTEIN. WATER HEATER. PURIFIER, AND SEPABATOR:

(Application med July so, 1900.

(No Model.) 2 Sheets-Sheet 2.

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Unirse rrns ArtNr Frise@ ARCHIE G. HOI-IENSTEIN, OF NEW HAVEN, CONNECTICUT.

WATER HEATER, PURIFIER, AND SEPARATOR.

SPECIFICATION formingpart of Letters Patent N o. 661,934, dated November` 13, 1900.

Application filed July 30, 1900. 'Serial No. 25,266. (No model.)

To @ZZ whom it may concern:

Be it known that I, ARGHIE G. HOHENSTEIN, a citizen of the United States, residingat New Haven, in the county ofNew Haven and State of Connecticut, have invented or discovered certain new and useful Improvements in Vater Heaters, Purifiers, and Separators, of which improvements the following is a specication.

In an application, Serial No. 25,265, filed July 30, 1900, I have described and claimed certain improvements in heaters for boilers, said improvements having for their object not only the heating of the water, but also the precipitation and removal of carbonates,

l sulphates, dac., andthe separation of air and gases from the water prior to the entrance of the water into the circulation in the boiler.

The invention described herein relates to certain specic improvements in heaters for the purposes specified; and the invention also has for its object the utilization of the movement of the feed-water toward and into the boiler for the production of an active circulation through the boiler` and also the circulation of Water at boiler temperature through the heater for raising the feed-water to a temperature at which a precipitation of the sulfids, carbonates, ttc., will be effected.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a part of this specification, Figure l is a view, partly in elevation and partly in section, showing my improvements applied to a boiler; and Fig. 2 is a sectional elevation, on an enlarged scale, of the heater.

My improved heater may be applied to any form of boiler, either of the horizontal tubular type or of the flue-boiler type, and consists of an external shell 74, provided with annular tube sheets or heads 75 and 76, in which are secured in any suitable manner the vertical tubes 39a. Through these tube-sheets passes the rising tube 68a, which communicates at its lower end with a settling chamber or reservoir 64 and with a drum or steamspace 69n at its upper end. The lower portion of the space between the tube sheets or heads 75 and 76 is connected by a pipe 77 with the boiler, and a return connection from Vthe heater to the boiler is formedv by a pipe vjector 79.

78 and an injector 79, interposed at a suitable point in the pipe between the heater and the boiler or steam-generator. Feed-water is forced by a pump A or by other suitable means through pipe 52 into an annular chamber 40 at the upper ends of the tubes 39a. In operating this device the water enters into the chamber 40", passes down through the tubes 39n into the settling-chamber 64 at the lower end of the heater, and then iiows up through the rising tube or separating-chamber 68a, and thence by the pipe 78a and injector 79 into the boiler. During this circuit the feed-wateris brought up to the same temperature as the water in the boiler or to a sufficiehtly high temperature to effect a separation of the carbonates, sulphates, &;c., by the water drawn from the boiler through the pipe 77 into the shell 74, where it circulates around tubes 39 and returns to the boiler through the pipe 78 and injector 79, commingling with the feed-water in the injector. The movement of the water from the boiler through the heater and back to the boiler is effected by the feed-water operating through the in- Hence in case a small amount of Water is being forced by the pump into the boiler the injector will draw a less amount of heated water from the boiler; but if the pump is working rapidly the feed-water jet in the injector will have a higher speed, and therefore draw a proportionately greater amount of Water from the boiler to heat the feed-water.

Ordinarily sufficient steam or gases will be obtained from the separating chamber or chambers of the heater and separator to operate the pump A, to which the separatingchamber is connected by a pipe 73. In order to maintain the waterin the boiler and heater at as constant a level as possible, a float 8O is arranged in the rising tube of the heater, as shown in the drawings. The stem of this float passes out through a stuffing-box and is connected to an arm 81, attached to the stem of a controlling-valve 82 in the steam-supply pipe 73. The float may be arranged in the boiler having its stem connected to a valve arranged in a pipe extending from the steamdrum of the boiler to the pump, as shown and described in the application, Serial No. 25,265, heretofore referred to.

IOO

The water in the heater should be maintained at a level somewhat above the point of connection of the pipe 7 8at with the heater, so that a solid column of water will be constantly supplied to the pipe 7 8a for replenishing the boiler. As the feed-water passes up through the rising tube the solids separated by the heat are precipitated and settle down into the collecting-chamber 64a, which, it will be observed, is entirely outside of the circulating system of the boiler. During this upward movement of the feed-water through the rising tube any gases or air contained in the feed-water will free themselves from the water and collect, with any steam generated in the heater, in the space 69 above the Waterlevel in the rising tube and can be utilized in operating the feed-pump A or for any other purpose.

It is frequently desirable to utilize the exhaust-steam from auxiliary devices or engines having a free exhaust to preheat the water before it enters the main heater, separator, and purifier. To this end an exhaust-heater of anysuitable form or construction, but preferably one similar in construction to the heater heretofore described, is interposed between the feed-pump and the main heaterandpurifier. The delivery side of the pump A is connected bya branch 83 from the pipe 52 to the annular chamber 40h of the auxiliary heater, so that the water will How into said chamber, thence down through the tubes 39b to the chamber 64b at the lower end of the heater, and thence up through the rising tube 68h, from which it passes by the pipe 84: to the pipe 52 and the chamber 40@ of the main heater. Exhaust-steam is conducted by the pipe 85 into the space of the heater through which the tubes 39b pass and escapes from said space by the pipe 86. During its passage through this exhaust-heater the Water will be heated nearly to boiling temperature.

As shown in Fig. 1, the feed-water pipes have suitable valves so arranged that the feedwater may be caused to pass through both heaters or through either one of the heaters or directly to the boiler itself. To this end a by-pass pipe 86, provided with a valve 87, is

connected to the pipes 52 and 78, as shown, and valves 88, 89, 90, and 91 are arranged in the branch 83 and the pipes 84 and 52, respectively, as shown. The by-pass 86 is connected to the pipe 78 just outside of the regulating-valve 92. By closing the valves 87 and 90 and opening the valves 88, 89, and 91 the feed-water will pass from the pump through both heaters and thence to the boiler. If it be desired to cut out the auxiliary heater, the valves 88 and 89 are closed and the valves 90 and 91 opened, so that the water will now pass by the pipe 52 to the main heater and purifier. If it is desired to cut out the main heater and purilier and to utilize the auxiliary heater, the valves 88, 89, and 87 will be opened and valves 90 and 91 closed, or if it be desired to feed direct to the boiler from the pump the valves 88, 89, and 91 will be closed and the valves 90 and 87 opened.

If desired, a filtering material, preferably excelsior or other material which will not be injured by the hot water or steam, may be placed in the rising tube or tubes 68 for the purpose of preventing the passage of any solid matter to the boiler. This material is supported in position by a disk 103, formed of Wire-netting or perforated metal which is held in positionby any suitable means-as, for example, by a bar 105, passed through an eye at the end of the rod 106, connected to the disk 103, the ends of said bar resting on shoulders which 'may be formed by the upper end of the rising tube, as shown in Fig. 2.

As hereinbefore stated, the rate of fiow of feed-water to the boiler is controlled by the rise and fall of Water in the boiler operating through the iioat and the valve in the steampipe leading to the pump The rate of flow of feed-water through the injector controls the flow of water from the boiler through the heater and back to boiler. Hence as the pipes 77 and 78, connecting the boiler and heater, are so arranged that water is drawn from one point of boiler-e. g. the front endand discharged, with the feed-water, into the boiler at an other-a g. the rear end thereofa circulation from the rear to the front end will be established. It is preferred that the water should be drawn from and discharged into the boiler at dierent levels-as, for example, in the arrangement shown the water is drawn from a point near the bottom of the boiler and discharged into the boiler at a point near the water-level. By this arrangement of outlet and inlet a movement of the water from end to end and from top to bottom, or vice versa, is obtained.

As the rate of fiow from the boiler through the heater and back is controlled by and is proportional to the rate of flow of feed-water to the boiler, it is evident that the rapidity of circulation of water in the boiler is directly proportional to the amount of water fed to the boiler.

I claim herein as my invention- 1. The combination of a boiler, a feed-water heater, a connection between the boiler and heater to permit of the flow of water from the boiler, an injector having its nozzle connected to the feed-water portion of the heater and its feed-inlet connected to the heating portion of the heater, and its outlet connected to theboiler, and means for feeding water to the heater whereby a circulation of boiler-water through the heater is effected by the feedwater, substantially as set forth.

2. The combination of a boiler, a feed-water heater, in and out connections between IOO TIO

the boiler and heater, an injector having its part of the connection between the boiler and heater, means for feeding Water to the heater, and means operative on Changes of Waterlevel in the heater or boiler for controlling the means for feeding Water to the heater, substantially as set forth.

3. The combination of a boiler, means for feeding Water to the boiler, means operative on a change of Water-level in the boiler for controlling the rate of feed of Water to the boiler, and means controlled by the feed-Water for producing a circulation of the Water in the boiler, substantially as set forth.

4. A feed-Water heater having in eombination a receiving-Chamber, a settling-Chamber, an intermediate heating-ehamber, tubes eX- tending` from the receiving-Chamber through heating-chamber into the settling-chamber and a rising tube connected to the settlingehamber and extending above the normal Wa- ARCHIE G. HOHENSTEIN.

Witnesses:

DARWIN S. WoLoo'rT, F. E. GAITHER. 

